[plt-scheme] interprocess communication

Before I hack up something based on sexps-over-SSL and a broadcast
message server...

Any new thoughts on an IPC/RPC mechanism for PLT Scheme programs?

XML-RPC, SOAP, CORBA, Java RMI, Microsoft, and Sun/ONC RPC are all out.

There is some work in lightweight portable IPC mechanisms, including
at least one suggested candidate for a next generation X Window System,
but unless one of them takes off in popularity, it's easier to use
something Scheme-specific.

The interesting goal of a Scheme OS notwithstanding, I really do need to
have lots of agent, store, and UI programs in separate host OS
processes, perhaps between different hosts.